When including a soldier or a military unit in a Regency romance, an author has to ask who was in the area at the time, and what sort of military unit was it. At the time, the regular army was heavily committed overseas, in Portugal and Spain, in India, in the Americas–though, depending on the year, there were regiments who were not on active duty, or who were on home defense duty. The two other options were the militia and the volunteers. Think of the militia as a sort of army reserve, and the volunteers as the home guard. Not quite, but sort of.
The regular army and the milita had long been a feature of Britain. The army was relatively small before the Napoleonic threat–just 45,000 men, two thirds of whom were stationed abroad. They had recruiting issues, and the rank and file were notoriously those who had few other choices–the poor, the unskilled, those who didn’t fit in.
The militia in Georgian Britain, by contrast, were part-time soldiers serving one month a year in peacetime. There had been a militia since 871, so they were an older establishment than the army itself. By the mid 18th century, every county had to supply, and pay for, a certain number of militia. They were chosen by ballot, though they had the option to pay someone else to serve in their place. They had to serve for four years and did one week’s training four times a year. They served in their home county, and could be called out to deal with an emergency.
With the rising threat from France, the government first passed a law to increase the militia by a further 60,000 men. The innovators didn’t provide any money, so the spaces were filled by those who could afford to pay for their own uniforms and weapons. In other words, the upper and middle classes. Then, after a major military defeat in 1797, the government called for each county to find out how many men were within their borders, and how many would volunteer to defend Britain.
They were stunned by the response. By 1803, 380,000 men had volunteered. The officers tended to be from the upper classes, and the ranks from the lower middle class. Volunteers were exempt from military service and from taxes. They committed themselves to local defense in case of invasion or insurrection, but otherwise remained civilians.
The volunteer forces proved to be a problem. The State couldn’t afford to outfit and train them, and the small local volunteer forces operated outside of military rule, and often refused to serve outside of their own area. There were also manpower problems in the other military units, since men would rather be volunteers than militia, and militia than regular army.
The government went down the compulsory service line, and between 1806 and 1815, volunteer units were disbanded. In many cases their members were taken into militia units. However, this was not the last time Britain raised volunteer forces to its defence.